baber/WOPTO huggingface dataset:
Patent CA-1310647-C (CA)
Title: Heteroaryl 3-oxo-propanenitrile derivatives and process for their preparation
Inventor: DORIA GIANFEDERICO
IPC: A61K31/415
Filed: 1988-01-07
Granted: 1992-11-24
Abstract: A B S T R A C T            Heteroaryl 3-oxo-propanenitrile derivatives The invention relates to compounds having the general formu-la (I) (I)   wherein X represents an oxygen atom or a -S(O)n-group, wherein n is zero, 1 or 2;          R1 represents C1-C6 alkyl, benzyl, pyridyl or phenyl, the phenyl being unsubstituted or substituted by one or two substituents chosen independently from halogen, trifluoro-methyl, C1-C6 alkyl, C1-C6 alkoxy, nitro, amino, formylamino and C2-C8 alkanoylamino; each of R2 and R3 is independently: a) hydrogen, halogen or C1-C6 alkyl; b) hydroxy, C1-C6 alkoxy or C3-C4 alkenyloxy; or c) nitro, amino, formylamino or C2-C8 alkanoylamino;          R4 represents hydrogen or C1-C6 alkyl, and Q represents hydrogen, carboxy, CONH2, C2-C7 alkoxycarbonyl or a        or a        group, wherein Ra represents hydrogen or C1-C20 alkyl and Rb represents C1-C20 alkyl or a -(CH2)m-R5 group, wherein m is zero, 1 or 2 and R5 is: a') C5-C8 cycloalkyl; b') pyridyl,unsubstituted or substituted by one or two substituents chosen independently from halogen, C1-C6 alkyl and C1-C6 alkoxy; or c') phenyl,unsubstituted  or substituted by one or two sub-stituents independently chosen from halogen, CF3 ,C1-C6 alkyl, C1-C6 alkoxy, amino, nitro,formylamino, C2-C8 alkanoylamino, di (C1-C6 alkyl) amino, hydroxy, formyloxy and C2-C8 alkanoyloxy, and the pharmaceutically acceptable salts thereof, which possess immunomodulating activity and are useful e.g. in the treatment of neoplastic diseases and acute and chronic infections of both bacterial and viral origin in mammals.
Patent CA-1329767-C (CA)
Inventor: ZIERENBERG BERND
IPC: A61K9/52
Filed: 1988-01-20
Granted: 1994-05-24
Abstract: ABSTRACT         The present invention provides an oral pharmaceutical composition adapted for the controlled delayed release of an active substance and comprising said active substance and a carrier or coating material, wherein said carrier or coating material comprises a material selected from biodegradable cyclic carboxylic acid esters, polymers thereof, and mixture of said esters or polymers.  The invention also provides processes for preparing such compositions.
Patent CA-1317730-C (CA)
Inventor: LUSTIG STANLEY
IPC: B32B27/08
Filed: 1988-02-01
Granted: 1993-05-18
Abstract: Abstract A heat-shrinkable multilayer film suitable for use in fabricating bags for packaging primal and subprimal meat cuts.  The multilayer film has a first outer layer of an ethylene-vinyl acetate copolymer, a first core layer of an oxygen barrier material, a second core layer of a polyurethane, and a second outer layer of a linear low density polyethylene.  The multilayer film is preferably made by coextrusion of the layers, and then it is biaxially stretched.  After biaxial stretching, the multilayer film is preferably irradiated to a dosage level of between 3 megarads and 8 megarads, and is then heat-sealed in the form of a bag.  The bag has improved toughness properties.
Patent CA-1287171-C (CA)
Title: Teaching and amusement apparatus
Inventor: FRAZER STEPHEN O
IPC: G09B7/06
Filed: 1988-02-05
Granted: 1991-07-30
Abstract: C A N A D A                 S P E C I F I C A T I O N         TO ALL WHOM IT MAY CONCERN:         Be it known that we, PRICE/STERN/SLOAN , INC., a corporation organised under the laws of the State of Delaware, United States of America, of 360 North La Cienega Boulevard, Los Angeles, California, United States of America, are in possession of an invention entitled:          TEACHING AND AMUSEMENT APPARATUS and the following disclosure contains a full description of the invention and of the best mode known to the inventors for taking advantage of the same.                        ABSTRACT            Teaching and Amusement Apparatus Known teaching and amusement apparatus comprises a self-contained electronic "pen" which is used in conjunction with specially printed material to provide an interactive system e.g. in the form of a worksheet or book having question and answer areas.  The "pen" used senses differences in the infra-red radiation properties of the answer areas to indicate audibly whether a correct or an incorrect answer has been selected.  The invention relates to an improved "pen" (10) which operates in an active mode and a programming mode.  A switch (12) changes the mode of the "pen".  In the programming mode, the "pen" is programmed to operate according to the printed material on which it is to be used.  The "pen" (10) further includes a visual display (13) for indicating whether a correct or incorrect answer has been given.
Patent CA-1286974-C (CA)
Inventor: LAUTZENHISER JOHN L
IPC: A61G5/04
Filed: 1988-03-11
Granted: 1991-07-30
Abstract: MECHANICAL CONTROL MECHANISM FOR CONVEYANCE An electric wheelchair, or other conveyance, is provided with a function control which includes a unitary control, and which is effective to control applying and releasing of power transmitted from an electric motor to a wheel, or to another type of propulsion element, and to control applying and releasing of a parking brake, in response to positioning of the unitary control.
Patent CA-1317104-C (CA)
Title: Refractory plate for a sliding gate at the outlet of a metallurgical vessels
Inventor: FRICKER ROBERT
IPC: B22D41/08
Filed: 1988-03-24
Granted: 1993-05-04
Abstract: ABSTRACT     A refractory plate of rounded-oblong or oval design and having a shrunk-on ring on its periphery is to be improved by outer shaping in that an oval peripheral area (15) has, at least on one transverse head side, a clamping face (7) to receive the clamping force and is arranged transversely to the main axis (5) of the plate.  This counteracts cracking, and the service life is increased.
Patent CA-1282992-C (CA)
Inventor: ROBBINS R RALPH
IPC: F24F7/007
Filed: 1988-04-28
Granted: 1991-04-16
Abstract: ABSTRACT OF THE INVENTION              In a ventilation system for a building in which air  is  extracted  by  a  fan  arrangement,  an  inlet  flap arrangement is provided for a ceiling opening which comprises a foamed material  flap  member  mounted  directly  covering  the ceiling opening.   The flap member is controlled by a tension spring biasing it to a closed position so that its weight and air pressure act to open the flap.   The angle of the spring relative to the position of the centre of gravity of the flap member   are   controlled  to  provide  the  required  opening characteristics.   In one arrangement the flap member is shaped as a scoop so as to direct air along the ceiling when opened.
Patent CA-1298373-C (CA)
Title: Data transmission bus coupler
Inventor: CLEMENTS VICTOR
IPC: H01R13/719
Filed: 1988-06-30
Granted: 1992-03-31
Abstract: Data Transmission Bus Coupler ABSTRACT      A plug-in coupler for forming a splice between a data  transmission  bus  of  a multiplexed  data  trans-mission system and a plurality of stubs of the system comprises a generally flat housing having a pair of disconnectable connector portions 5 that are connected to each other within the housing by a pair of conduc-tors 7 so that an in-line splice can be formed in the data bus.  The housing also has an array of contacts 6 for  forming  releasable  connections  to  a  number  of stubs,  the contacts being transformer coupled to the conductors 7 via isolation transformers 8 and resistors 9.
Patent CA-1312201-C (CA)
Title: Mole trap and the like
Inventor: MCPHERSON SAMUEL L
IPC: A01M23/34
Filed: 1988-07-07
Granted: 1993-01-05
Abstract: MOLE TRAP AND THE LIKE                 Abstract of the Disclosure A mole trap and the like comprising a base adapted to be placed on the ground, a pair of spring loaded levers pivoted to said base and movable from a latched position to an unlatched position, a flexible loop associated with each lever and adapted-to extend into the ground transversely of a mole tunnel and a lever projecting into the tunnel and engageable by the mole in its travel through the tunnel to unlatch either of the levers and permit the spring associated with a lever to move the loop and engage and trap the mole.
Patent CA-1292336-C (CA)
Title: Cordless telephone with battery saving function
Inventor: MAKINO MASAYUKI
IPC: G06F15/16
Filed: 1988-07-15
Granted: 1991-11-19
Abstract: A B S T R A C T           A cordless telephone includes a fixed unit and a portable unit which are communicatable with each other over a radio link.  The portable unit has a rechargeable battery and a battery saving circuit responsive to a control signal for inter, rupting power supply to predetermined sections of the portable unit.  The fixed unit has a charging circuit for converting an AC voltage into a DC voltage to produce a charging voltage.  The fixed unit also has a detector for detecting that the battery of the portable unit is being charged by the charging voltage and outputting a detect signal.  Finally, the fixed unit has a supply circuit responsive to the detect signal for outputting the control signal and supplying the control signal to the portable unit together with the charging voltage.
Patent CA-1341026-C (CA)
Inventor: MAZZEI GONZALO JOSE
IPC: C07K14/00
Filed: 1988-08-25
Granted: 2000-06-13
Abstract: This invention relates to interleukin 1 inhibitors (IL-1 INHs) that selectively inhibit interleukin 1 activity. The invention also relates to processes for purifying such IL-1 INHs from urine and for producing such IL-1 INHs by hosts transformed with recombinant DNA molecules comprising DNA sequences encoding the inhibitors, and to methods of treatment and compositions characterized by such IL-1 INHs. These methods and agents are useful in immunosuppressive and anti-inflammatory applications and therapies.
Patent CA-1331024-C (CA)
Inventor: RIDLEY HUGH
IPC: E01H5/04
Filed: 1988-08-31
Granted: 1994-07-26
Abstract: ABSTRACT         There is disclosed a power actuator for a discharge chute of a snowblower.  The actuator includes an electric motor, drive means connecting the motor to a spiral component which engages slots in the discharge chute.          Electrical connections are provided for connecting the motor to a power source and switch means are provided for on-off operation.  The power actuator is particularly suitable for retro-fits for existing snowblowers.
Patent CA-1331341-C (CA)
Inventor: SINNREICH JOEL
IPC: A61K9/22
Filed: 1988-09-16
Granted: 1994-08-09
Abstract: Covered retard form Abstract The invention relates to a covered, solid retard form which in the caseof oral administration remains in the stomach during periodic emptying and ensures continuous release. This dosage form contains the following components: a) at least one component that expands on contact with body fluid and that contains a physiologically active substance or a combination of such substances, b) at least one permeable hydrophilic membrane which surrounds compo-nent a) and which is expansible at the site of use, and optionally c) a covering which surrounds component a) and membrane b) and which disintegrates without delay under the action of body fluid at the site of use.
Patent CA-1318109-C (CA)
Title: Method for hydrating hemihydrate gypsum
Inventor: KOSUGI TATSUHIRO
IPC: B28B7/34
Filed: 1988-10-11
Granted: 1993-05-25
Abstract: ABSTRACT OF THE DISCLOSURE       A gypsum mold having good water absorbing properties, which is suitable for cast molding pottery, can be prepared by stirring a mixture of hemihydrate gypsum cooled to -40 to 5°C and water  to  form  a  slurry  of  gypsum  in  water  having  a temperature of -5 to 10°C, pouring it into a water-impermeable mold,  maintaining  it  therein  until  the  setting  reaction thereof is completed and then releasing the set product from the mold.
Patent CA-1318093-C (CA)
Title: Rapid recoverable ptfe and process therefore
Inventor: HOUSE WAYNE D
IPC: A61F2/06
Filed: 1988-10-18
Granted: 1993-05-25
Abstract: ABSTRACT   This invention relates to porous polytetrafluoroethylene (hereinafter PTFE) materials having the property of rapid recovery and a method for producing these materials.  The microstructure of the porous PTFE material consists of nodes interconnected by fibrils, substantially all of the fibrils having a bent or wavy appearance.  Articles made from these materials are particularly suitable for use in the medical field, but are also useful in other areas such as filtration and fabric applications.
Patent CA-1327182-C (CA)
Title: Infusible preceramic polymers via ultraviolet treatment in the presence of a reactive gas
Inventor: BURNS GARY T
IPC: C01B31/00
Filed: 1988-10-26
Granted: 1994-02-22
Abstract: INFUSIBLE PRECERAMIC POLYMERS VIA ULTRAVIOLET TREATMENT IN THE PRESENCE OF A REACTIVE GAS                     ABSTRACT           A method is disclosed for the preparation of ceramic materials or articles by the pyrolysis of preceramic polysilanes wherein the preceramic polysilanes are rendered infusible prior to pyrolysis by exposure to ultraviolet irradiation in the presence of a reactive gas selected from the group consisting of ethylene, 1,3-butadiene, 2-methyl-1,3-butadiene, 1,4-pentadiene, silane, chlorosilane, dichlorosilane, boron trichloride, oxygen and water mixture, acetylene, and tetravinylsilane.  This method is especially suited for the preparation of ceramic fibers.  The ceramic fibers surface properties can be modified by the practice of this invention; for example, a ceramic fiber with a carbon rich surface layer can be obtained when 1,3-butadiene is used as the reactive gas.
Patent CA-1326632-C (CA)
Title: Long-active drug formulations comprising galanthamine  for treatment of alzheimer's disease
Inventor: DAVIS BONNIE
IPC: A61K31/675
Filed: 1988-10-26
Granted: 1994-02-01
Abstract: A B S T R A C T           Long acting Galanthamine formulation is prepared by coating particles of drug with polyvinyl pyrrolidone, sizing the particles and incorporating them into a capsule or tablet.
Patent CA-1316328-C (CA)
Title: Wear-resistant compound roll and method of producing same
Inventor: OSHIMA MASAHIKO
IPC: C21D9/38
Filed: 1988-11-22
Granted: 1993-04-20
Abstract: ABSTRACT         A wear-resistant compound roll comprising an outer layer made of an iron-base alloy containing such components as to precipitate at least one of carbides of W, V, Nb, Ti, Ta, Zr and Hf from an alloy melt in a solidification process thereof, and a steel shaft metallurgically bonded to the outer layer, the outer layer having a surface with a Shore hardness of 70 or more, and the shaft having a tensile strength of 55 kg/mm2 or more and an elongation of 1.0% or more, and a boundary layer between the outer layer and the shaft being not weaker than weaker one of the outer layer and the shaft.         The iron-base alloy has a composition by weight % consisting essentially of 1.5-3.5% C, 0.3-3.0% Si, 0.3-1.5% Mn, 2-7% Cr, 9% or less Mo, 20% or less W, 3-15% V and balance substantially Fe.
Patent CA-1298347-C (CA)
Title: Electrochemical cell
Inventor: MEINTJES ANTHONY A
IPC: H01M10/39
Filed: 1988-12-02
Granted: 1992-03-31
Abstract: ABSTRACT OF THE DISCLOSURE            The invention provides a rechargeable high temperature electrochemical power storage cell having a molten alkali metal anode separated from a cathode by a separator.  The separator divides the cell into an anode compartment which contains said alkali metal and a cathode compartment which contains a cathode.  The separator permits the anode alkali metal to pass  therethrough during discharge of the cell from the anode compartment to the cathode compartment into which it is released in ionic form for reaction with the cathode.  The cell has an operative attitude  in which it  is upright,  in which operative attitude the separator extends at an angle to the horizontal so that the level of the surface of anode metal in the anode compartment to which the separator is exposed, drops during discharge of the cell and rises during charging of the cell.  The anode compartment has a lower portion and an upper portion which has a greater horizontal cross-section than the horizontal  cross-section of the  lower portion,  and the  lower portion is entirely filled with anode metal in the fully discharged state of the cell.
Patent CA-1304374-C (CA)
Inventor: GARRIGUE ROGER
IPC: C08K5/3477
Filed: 1988-12-22
Granted: 1992-06-30
Abstract: Process for curing aminoplastic resins. Process for curing with the aid of a triazinone derivative. Curing process allowing the molar ratio F/NH2 of the resins to be adjusted.
Patent CA-1317448-C (CA)
Title: Drilling fluid thinner
Inventor: PATEL BHARAT
IPC: C09K8/20
Filed: 1989-02-17
Granted: 1993-05-11
Abstract: ABSTRACT An improved aqueous drilling fluid additive comprising chromium acetate and sulfoalkylated tannins optionally in combination with lignite.
Patent CA-1312930-C (CA)
Title: Combineur/diviseur multivoie
Inventor: BENAHIM GUY
IPC: H01P5/12
Filed: 1989-03-17
Granted: 1993-01-19
Abstract: L'invention concerne un dispositif pour combiner ou diviser les puissances de signaux électromagnétiques et plus particulièrement un dispositif du mode radial. Dans un combineur/diviseur qui comprend deux disques métalliques (20 21), définissant un espace annulaire de propagation, chaque voie est séparée de la voie adjacente par une fente radiale (43) qui est disposée dans le disque inférieur (20) et qui s'étend de l'ouverture centrale (25) à la couronne périphérique (22). En outre, chaque voie ainsi définie comporte une échine radiale (33). L'invention est applicable aux émetteurs, notamment ceux utilisés dans les radars. Figure 6
Patent CA-1338120-C (CA)
Inventor: NOGUCHI TAKEHIKO
IPC: C08G73/10
Filed: 1989-04-10
Granted: 1996-03-05
Abstract: A process for manufacturing a polymer includes the first step of reacting a solution of one of two starting materials in an organic solvent with the other material in the form of a powder, and the second step of reacting a solution of the reaction product of the first step in an organic solvent with a solution of the other material in an organic solvent.  The process preferably includes one or both of two additional steps, i.e. filtering the reaction product of the first step, and degassing the reaction product of the second step by stirring it at a reduced pressure.  An apparatus for carrying out the process is also disclosed.  This invention makes it possible to produce a polymer of high and uniform quality having a final viscosity controlled within a certain range and not containing foreign matter or bubbles.
Patent CA-1326219-C (CA)
Title: Method for the continuous maturation of fermented beer
Inventor: PAJUNEN ESKO
IPC: C12H1/00
Filed: 1989-04-21
Granted: 1994-01-18
Abstract: ABSTRACT       There is provided a method for the continuous maturation of fermented beer comprising, firstly, removal of yeast from beer after primary fermentation.  The fermented beer is then heated under pressure to convert alpha acetolactate and other diacetyl precursors present to diacetyl.   The beer is then cooled to between about 0°C to 25°C and fed under pressure through a reaction column packed with immobilized yeast cells on a carrier material.  The flow rate through the column effects conversion of the diacetyl to acetoin in order to lower the diacetyl to acceptable taste concentration.  The beer is then cooled to a temperature sufficient to stabilize the beer.
Patent CA-1331484-C (CA)
Inventor: AIHARA YUKITAKA
IPC: G05B19/416
Filed: 1989-04-27
Granted: 1994-08-16
Abstract: ABSTRACT OF THE DISCLOSURE       In  drilling  control  method  and  apparatus  for making  holes  through a  composite workpiece made of a plurality  of  materials  having  different  machining properties,  the workpiece  is  first  drilled at  a  feed speed  and  a  rotational  speed  of  a  drill  which  are selected.  When  this  drilling  of  the  workpiece  is initiated,  the  amounts  of  the  feeding  speed  and  the rotational speed are detected by a feed speed sensor and a rotational speed sensor, respectively, and thrust force applied to the drill during the drilling is also detected by a thrust sensor.   The detected feed speed and the rotational  speed  of  the  drill  are  compared  in  a comparison unit with optimum values which are adapted to the detected thrust force.   When the detected values of the feed speed and the  rotational speed of  the drill coincide  substantially  with  the  optimum  values,  the drilling operation is performed, while when the detected values of  the  speed do not  coincide with the optimum values, the feed speed and rotational speed of the drill are changed to the optimum values.
Patent CA-1298640-C (CA)
Title: Avalanche photodiodes and methods for their manufacture
Inventor: TAROF LAWRENCE E
IPC: H01L31/107
Filed: 1989-05-04
Granted: 1992-04-07
Abstract: Abstract of the Disclosure AVALANCHE PHOTODIODES AND METHODS FOR THEIR MANUFACTURE       An avalanche photodiode has separate absorption and multiplication regions.  The photodiode has a first charge sheet located between the absorption region and a central portion of a pn junction of the multiplication region, and a second charge sheet located between the absorption region and edges of the pn junction.  The second charge sheet has a lower doping concentration per unit area than the first charge sheet.  The first and second charge sheets may be formed by forming a heavily doped semiconductor sublayer, and preferentially removing a portion of the sublayer to leave thicker portion of the sublayer which defines the first charge sheet and a thinner portion of the sublayer which defines the second charge sheet.  Another sublayer may then be formed over the charge sheets, and the pn junction may be formed in that sublayer.  The photodiode is useful for optical signal detection in optical fiber telecommunications systems.
Patent CA-1303712-C (CA)
Inventor: SEKIGUCHI TAKESHI
IPC: H05K1/11
Filed: 1989-05-15
Granted: 1992-06-16
Abstract: Abstract of the Disclosure Holes are formed in a major surface of a hybrid IC insulating substrate mounting an optical semiconductor element, and terminal pins of a package are connected and fixed to the substrate while head portions of the terminal pins are inserted in the corresponding holes.     Since the terminal pins do not protrude outside the major surface of the insulating substrate, a space therefor can be omitted, and the terminal pins are directly connected to the insulating substrate without being separated from each other.  Furthermore, since the head portions of the terminal pins are inserted in the corresponding holes of the insulating substrate, they can be automatically aligned.  In case that each hole has a tapered inner surface, insertion of the terminal pins can be further facilitated.
Patent CA-1331251-C (CA)
Inventor: FLESHER PETER
IPC: C08L101/00
Filed: 1989-05-16
Granted: 1994-08-02
Abstract: ABSTRACT         Particulate Polymers, their Production and Uses Polymeric  thickeners  suitable  for use as textile pigment  print  paste  thickeners  are  particulate  cross linked polymers having a particle size of below 20µm and have defined physical characteristics that indicates an optimum degree of cross linking and molecular size within the polymer.